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This article focuses on "how to use dockerfile-maven-plugin". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Now let the editor take you to learn how to use dockerfile-maven-plugin.

Catalogue

Pom configuration

Setting.xml configuration

Login situation

Login required

No need to log in

Maven multi-module configuration

Jenkins

Jenkins server installs docker

Modify jenkins project configuration

Recently, when deploying the application to the container platform, you need to generate a docker image when packaging. The plug-in docker-maven-plugin was first found on the Internet, but it is very troublesome to use, and you have to do a lot of additional configuration in both maven and dockfile. Later, I saw in the official Github that the author recommended dockerfile-maven-plugin as a new plug-in, so I replaced it with this one, but there is little information about this plug-in on the Internet. Record it here.

Pom configuration org.apache.maven.plugins maven-deploy-plugin true com.spotify dockerfile-maven-plugin 1.4.10 Docker -reg.****.com/feedback/$ {artifactId}-${profiles.active} ${project.version} target/$ {project.build.finalName} .jar setting.xml configuration

This file is in the maven directory and can be accessed by cd $M2_HOME/conf.

Add a com.spotify to pluginGroups

Login is required for com.spotify login

There are many pits on how to verify login. If you set your repository private in habor, you must log in, according to the official configuration, as follows.

Com.spotify dockerfile-maven-plugin ${version} repoUserName repoPassword ${docker.image.prefix} / ${project.artifactId} target/$ {project.build.finalName} .jar need not be logged in

However, because I have configured to automatically obtain images from habor at K8s, I have set publicity. In this case, there is no need to log in, but sometimes the execution will fail. In this case, you need to delete the configuration of this website in ~ / .docker / config.json.

Cat ~ / .docker / config.json {"auths": {"192.168.87.110 auth 5000": {"auth": "YWRtaW46JKDtaW4xMjM="} (delete here)}, "HttpHeaders": {"User-Agent": "Docker-Client/18.09.0 (linux)"}}

After confirming that this place is empty, if you still report an error, you can execute docker login again. That's how it works.

Maven multi-module configuration

In the case of multiple modules, the packaging plug-in must be placed in the Application sub-module, if placed in the root pom will result in packaging will not be successful.

The situation is as follows:

-app

-common

-file

-mail

-application

-pom.xml

In this case, we can take two steps.

The first step is to package all the modules in the root directory

Mvn clean package-P test

The second step is to execute the deploy command in the sub-module in which you want to package the image

Mvn dockerfile:build dockerfile:push

In this way, the submodule can be successfully packaged as a mirror and push.

Jenkins

After testing locally, get the process to jenkins and do some configuration.

Jenkins server installs docker

As I will not repeat here, the setting.xml and other configurations of maven are the same as those locally.

Modify jenkins project configuration

At this point, because the project needs to be packaged twice (once in the root directory and the second time as a mirror in the subdirectory), the mvn command needs to be executed twice, which is not the same as before, so the first execution is still using jenkins's Build module.

The second execution is placed in post steps through the command to execute

Cd submodule directory mvn clean package-P $env dockerfile:build dockerfile:push

In this way, you can complete the steps of packaging and making an image.

At this point, I believe you have a deeper understanding of "how to use dockerfile-maven-plugin". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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